| Canonical Name: | 1ES 1727+502 |
| TeVCat Name: | TeV J1728+502 |
| Other Names: | OT 546
1LHAASO J1727+5016 |
| Source Type: | HBL |
| R.A.: | 17 28 18.6 (hh mm ss) |
| Dec.: | +50 13 10 (dd mm ss) |
| Gal Long: | 77.07 (deg) |
| Gal Lat: | 33.54 (deg) |
| Distance: | z=0.055 |
| Flux: | 0.021 (Crab Units) |
| Energy Threshold: | 150 GeV |
| Spectral Index: | |
| Extended: | No |
| Discovery Date: | 2011-11 |
| Discovered By: | MAGIC |
| TeVCat SubCat: | Default Catalog |
Source Notes:
Source Position:
From
Archambault et al. (2015):
- R.A. (J2000): 17h 28m 4.1s +/- 7.5s (stat) +/- 5.2s (syst)
- Dec. (J2000): +50d 13' 60" +/- 1'10"(stat) +/- 50"(syst)
- The excess is consistent with a point source
- This position is also consistent with that provided by
NED, quoted above
From Aleksic et al. (2013):
- "The ï¬tted position of the excess is consistent with the catalogue
coordinates (RA: 17.47184deg*, Dec: 50.21956deg as in Ma et al. 1998)
within (0.032 +/- 0.015stat +/- 0.025sys) deg, and thus compatible
within the expected statistical and systematic errors"
- *presume units are hours
- 17.47184 hrs = 17h 28m 18.624s
- 50.21956 deg = 50d 13' 10.416"
- This position is thus consistent with that given
in NED, which we use here:
- R.A. (J2000): 17h 28m 18.6s
- Dec. (J2000): +50d 13' 10"
Spectral Information:
From Archambault et al. (2015):
- Spectral index: 2.1 +/- 0.3 (stat)
From Aleksic et al. (2013):
- Spectral index: 2.7 +/- 0.5 (stat)
Distance:
From Oke, J.B. (1978):
- "A pair of spectra of the BL Lacertae type of object I Zw 187
(1727+5015), taken 2" north and 2" south of the nucleus, show
absorption lines typical of a normal elliptical galaxy. The redshift
is z = 0.0554 +/- 0.0003.
Seen by: MAGIC, VERITAS, LHAASO
-
Broadband Multiwavelength Study of LHAASO-detected Active Galactic Nuclei
Wang, Ze-Rui et al., ApJS 271 p10 (2024) [LINK]
-
LHAASO detects variability in VHE gamma-ray emission from the blazar 1ES 1727+502
Xiang, G. et al. on behalf of the LHAASO Collaboration, The Astronomer's Telegram 16881 p1 (2024) [LINK]
-
The First LHAASO Catalog of Gamma-Ray Sources
Cao, Zhen et al., ApJS 271 p25 (2024) [LINK]
-
Multiwavelength temporal and spectral study of TeV blazar 1ES 1727+502 during 2014-2021
Prince, Raj et al., MNRAS 515 p2633-2645 (2022) [LINK]
-
Testing two-component models on very-high-energy gamma-ray emitting BL Lac objects
MAGIC Collaboration et al., arXiv e-prints parXiv:2006.04493 (2020) [LINK]
-
Multi-color optical monitoring of ten blazars from 2005 to 2011
Meng, N. et al., ArXiv e-prints p (2018) [LINK]
-
Long-term optical monitoring of TeV emitting blazars. I. Data analysis
Nilsson, K. et al., A&A 620 pA185 (2018) [LINK]
-
Very-high-energy blazars: updates from VERITAS observations and multi-wavelength campaigns
Cerruti, M. for the VERITAS Collaboration, ArXiv e-prints p (2015) [LINK]
-
VERITAS detection of gamma-ray flaring activity from the BL Lac object 1ES 1727+502 during bright moonlight observations
Archambault, S. et al., ArXiv e-prints p (2015) [LINK]
-
Highlights from the VERITAS AGN Observation Program
Benbow, W. and for the VERITAS Collaboration, ArXiv e-prints p (2015) [LINK]
-
VERITAS detection of gamma-ray flaring activity from the BL Lac object 1ES 1727+502 during bright moonlight observations
Cerruti, M. and for the VERITAS Collaboration, ArXiv e-prints p (2015) [LINK]
-
Discovery of very high energy gamma-ray emission from the blazar 1ES 1727+502 with the MAGIC Telescopes
MAGIC Collaboration et al., ArXiv e-prints p (2013) [LINK]
-
MAGIC discovery and multiwavelength observations of the BL Lac 1ES 1727+502
Berger, K. et al., ArXiv e-prints p (2013) [LINK]
-
Highlights from the VERITAS Blazar Program
Dumm, J. and for the VERITAS Collaboration, ArXiv e-prints p (2013) [LINK]
-
MAGIC discovers VHE gamma-ray emission from the blazar 1ES 1727+502
Moriotti, M. on behalf of the MAGIC Collaboration, The Astronomer's Telegram 3774 p1 (2011) [LINK]
-
The redshift and other properties of I ZW 1727 + 5015
Oke, J.B., ApJ 219 pL97-L100 (1978) [LINK]
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